JP2010095380A - Component carrying control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a component carrying control device capable of making a foremost component certainly carry out initial movement, and then certainly carrying the component to a target place. <P>SOLUTION: A first stopping member 29 stopping a foremost component 8 in a passage member 16, and a second stopping member 33 stopping a second component 8 alternately move forward/backward. An initial air jetting port 37 jetting air to the foremost component 8 to carry out the initial movement substantially concurrently with or immediately after releasing the stopping of the foremost component 8 by the first stopping member 29 is provided in the passage member 16. A carrying air jetting port 39 jetting air for carrying to a target place to the foremost component 8 after the initial movement starts is provided in the passage member 16. The carrying air is jetted from the carrying air jetting port 39 after a predetermined time period has passed since the initial air jetting starts. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a component transport control device of a type in which a first stop member for stopping the earliest component in a passage member and a second stop member for stopping a second component are alternately advanced and retracted with respect to the passage member. It is related.

A parts conveyance control device in which a first stopping member for stopping the first part of the parts in the passage member and a second stopping member for stopping the second part alternately advance and retreat with respect to the passage member is disclosed in Patent No. No. 3595921.
Japanese Patent No. 3595921

  In the parts transport control device as described above, when the earliest part and the second part adhere to each other with rust preventive oil or partially overlap, initial movement of the earliest part is not performed. There is a problem that it is not possible.

  This problem will be described with reference to FIG.

  FIG. 8A shows the case where the nuts adhere to each other with rust preventive oil. The nut 1 is a general one in which a screw hole 2 is formed in the center of a square body. The passage member 3 is composed of a tube member having a rectangular cross section, and the nut 1 is conveyed in a state where the nut 1 is not displaced in the rotational direction. The passage member 3 is inclined and the nut 1 slides down due to the inclination. The first restraining member 4 that restrains the sliding of the first nut 1 is advanced and retracted by an air cylinder or the like (not shown). Further, the second stopping member 5 that stops the sliding of the second nut 1 is advanced and retracted by an air cylinder or the like (not shown). And the 1st stop member 4 and the 2nd stop member 5 advance and retract alternately. That is, when the first stop of the nut 1 is released by the retraction of the first stop member 4, the second stop member 5 enters the screw hole 2 of the second nut 1 to perform the stop function.

  With such a structure, as shown in FIG. 3A, even if the restraint of the earliest nut 1 is released and the earliest nut 1 can be slid down, Since the flat lateral side surface of the nut 1 is adhered by rust preventive oil, it cannot slide. Accordingly, initial movement is impossible.

  The case shown in FIG. 8B is the case of the nut 1 provided with the flange 6, and the flange 6 is overlapped as shown in the figure, so that the first nut 1 cannot slide. .

  The present invention is provided in order to solve the above-mentioned problems, and is capable of reliably performing initial movement of the earliest component and subsequently performing reliable conveyance to a target location. The purpose is to provide.

Means to solve the problem

  The invention according to claim 1 is a first stop member for stopping the first part of the parts arranged in the transport direction in the passage member, and a second stop member for stopping the second part of the side parts. In the type in which the advancing and retreating alternately with respect to the passage member, the initial movement is performed on the earliest part almost simultaneously with or immediately after the first restraining member releases the restraint of the earliest part. The passage member is provided with an initial air injection port for injecting air for the purpose, and a conveyance air injection port for injecting air for conveying the first part to the target location after the start of the initial movement is provided in the passage member. The component transport control apparatus is configured such that the carrier air is ejected from the carrier air ejection port after a predetermined time has elapsed after the start of air ejection from the initial air ejection port.

The invention's effect

  Air injection is performed from the initial air injection port to the earliest part almost simultaneously with or immediately after the first restraining member releases the restraint of the earliest part. Make an initial move. Therefore, even if the first part and the second part are not easily separated due to adhesion of oil such as rust preventive oil or overlapping parts, the initial movement is almost forcibly made with respect to the first part. Is granted. Further, the second part is prevented from moving by the second stop member by the alternate operation of the first stop member and the second stop member. Therefore, there is no hindrance to the prior movement of the earliest part.

  Then, since the transfer air is blown from the transfer air injection port to the earliest part after the start of the initial movement, the earliest part is reliably transferred to the target location. In this way, air injection from the initial air injection port and air injection from the transfer air injection port are performed on the earliest parts, and reliable initial movement and transfer to the target location are performed. In other words, since the first part is separated from the second part by the initial air injection and is in an isolated state, the carrier air injection is performed, so the first part is surely independent of the second part. It is conveyed.

  Further, after the start of air injection from the initial air injection port, the carrier air is injected from the carrier air injection port after a predetermined time has elapsed. For example, after the parts have passed through the carrier air injection port The air injection timing is reliably set so that the carrier air is injected.

  According to a second aspect of the present invention, the predetermined time is set by a timer means that starts a time counting operation simultaneously with the start of air injection from the initial air injection port, and after the elapse of the predetermined time, the transfer air is transferred from the transfer air injection port. It is a components conveyance control apparatus of Claim 1 comprised so that it might inject.

  With the above configuration, after the air injection from the initial air injection port is completed, the transfer air is injected from the transfer air injection port. Therefore, by appropriately setting the predetermined time, it is possible to reliably execute the carrier air injection after the parts have passed through the carrier air injection port, thereby enabling smooth parts conveyance.

  According to a third aspect of the present invention, the predetermined time is set by a timer means that starts a time counting operation simultaneously with the start of air injection from the initial air injection port, and the carrier air is supplied from the carrier air injection port before the elapse of the predetermined time. The component conveyance control device according to claim 1, wherein the component conveyance control device is configured to inject.

  With the above-described configuration, the carrier air is jetted from the carrier air jet port before the air jet from the initial air jet port is completed. Therefore, by appropriately setting the predetermined time, it is possible to reliably carry out the carrier air injection when the parts do not stop after the initial movement, and the carrier air can be injected without stopping the parts. Therefore, there is no component stop and it is effective for shortening the conveyance time. Even if the part is easily caught on the inner surface of the passage member, there is no stop of the part, so that the part continues to be lifted by the air layer, and the parts can be smoothly conveyed.

  According to a fourth aspect of the present invention, in the component conveyance control device according to any one of the first to third aspects, the conveyance air injection port is provided at a position shifted to the conveyance direction side with respect to the first restraining member. is there.

  Since the carrier air injection port is provided at the above position, the carrier air injection is performed immediately after passing through the carrier air injection port with respect to the first part that has started initial movement by the backward movement of the first restraining member and the initial air injection. And reliable parts conveyance is possible.

  A fifth aspect of the present invention is the component transport control device according to any one of the first to fourth aspects, wherein the transport air injection port is disposed immediately after the first restraining member.

  Since the carrier air injection port is provided at the above position, the first part that has started initial movement by the backward movement of the first restraining member and the initial air injection is within a very short time after passing through the carrier air injection port. The carrier air injection can be performed, the operation cycle time is shortened, and it is effective for improving the carrier efficiency.

  According to a sixth aspect of the present invention, there is provided an air cylinder for advancing and retracting the second restraining member, and the working air for causing the air cylinder to perform advancing operation is commonly used as the ejected air from the initial air injection port. It is a components conveyance control apparatus in any one of Claims 5.

  The initial air injection can be performed almost in synchronism with the advancement of the second stop member while the movement of the second part is blocked by the advancement operation of the second stop member. Therefore, only the first part is reliably conveyed without being affected by the second part. Since the working air obtained from a single air supply source is shared for the advancement of the second restraining member and the initial air injection, the structure of the supply and discharge of the working air and the air supply passage is simple. It becomes. Furthermore, since the initial air injection is used for the initial movement of the earliest part, the injection time may be short. At the same time, since the air cylinder for driving the second restraining member is also used to advance and retract the second restraining member, the cylinder capacity is small and the supply time of the working air to the cylinder may be short. The initial air injection and the air cylinder operation can be performed at approximately the same time because of their functions. Therefore, since both can be set to approximately the same time in a short time in this way, it is not necessary to set the air supply time to both separately, which is effective for simplification of control.

  A seventh aspect of the present invention is the component transport control device according to any one of the first to sixth aspects, wherein an advance / retreat means for advancing / retreating the first stop member is provided.

  Since the advance and retreat of the second stop member is linked with the initial air injection, an air cylinder is adopted, but various drive means for the first stop member can be adopted. The advance / retreat means can be appropriately selected on the assumption.

  The invention according to claim 8 is the parts conveyance control device according to claim 7, wherein the advance / retreat means can obtain an advance / retreat output of an air cylinder, an electromagnetic solenoid or the like.

  An optimum one can be selected from various advance / retreat means such as an air cylinder and an electromagnetic solenoid. In the case of an air cylinder, the second restraining member is driven by the air cylinder, so that the whole can be operated by air. In the case of an electromagnetic solenoid, the electrical wiring can be simplified as compared with the air piping. Since various advance / retreat means such as an air cylinder and an electromagnetic solenoid can easily set their operation timing by air supply control, energization control, etc., the operation start timing of the second stop member, the start timing of initial air injection, etc. It is easy to set the operation timing associated with the.

  Next, the best mode for carrying out the component conveyance control apparatus of the present invention will be described.

  1 to 7 show a first embodiment.

  First, the components conveyed in the present embodiment will be described.

  Examples of the parts to be conveyed include a projection nut in which a screw hole is formed in the center of a square main body portion and welding projections are provided at four corners of the main body portion, and a projection nut with a flange. Here, it is a projection nut with a flange. In the following description, this projection nut may be simply expressed as a nut.

  As shown in FIGS. 4 and 5, the iron projection nut 1 has a cylindrical portion 10 and a circular flange portion 11 formed above and below the hexagonal main body portion 9, and 3 on the lower surface of the flange portion 11. The welding protrusions 12 are arranged at intervals of 120 degrees. And the screw hole 13 is provided in the center part. As for the dimensions of each part, the dimension between the corners of the main body part 9 is 13 mm, the diameter of the cylindrical part 10 is 10 mm, the diameter of the flange part 11 is 20 mm, the thickness of the flange part 11 is 2 mm, and the protruding height of the welding protrusion 12 is 0.6 mm, the inner diameter of the screw hole 13 is 8 mm, and the height of the nut 8 in the axial direction is 10 mm.

  Next, the structure of the entire apparatus will be described.

  FIG. 1 is a side view schematically showing the entire apparatus. A support column 15 is fixed to a stationary member 14 composed of a machine frame, a floor, and the like, and an elongated passage member 16 is coupled to the upper portion thereof in an inclined posture. The cross-sectional shape of the passage member 16 is the shape shown in FIG. 3 and is substantially U-shaped with a conveying groove 17 formed thereon. It is fixed by attaching. Even if the nut 8 floats up from the conveyance groove 17, the flange portion 11 is received by the pressing plate 18 and slides down the conveyance groove 17. It is also possible to apply the present invention to a rectilinear feeder that arranges the passage member 16 in the horizontal direction and applies conveyance vibration to the passage member 16.

  The nut 8 is supplied from the parts feeder 19 to the conveyance groove 17. An escape unit 20 is provided on the downstream side of the passage member 16 to feed the nuts 8 one by one. A beak-shaped joint 22 is provided on the lower side of the escape unit 20, and a flexible supply hose 23 made of urethane resin or polypropylene resin is joined thereto. The supply hose 23 extends to a target location where the nut 8 is supplied. Reference numeral 24 denotes a fixture for the supply hose 23 provided at the lower portion of the passage member 16, and has a rectangular cross section. The passage member 16 is made of stainless steel which is a nonmagnetic material.

  A sensor 25 for detecting the number of parts arranged in the transport direction is disposed in the transport groove 17. The sensor 25 functions to drive the parts feeder 19 by transmitting a signal when the number of parts in a line is below a predetermined number. The sensor 25 is of a type that magnetically detects the nut 8 in the conveying groove 17, and is fixed to the side surface of the passage member 16 and fixed to the support plate 26.

  Next, the escape unit will be described.

  As shown in FIG. 4, a stainless steel block member 27 is fixed to the passage member 16 by bolting or the like. A passage groove 28 is formed on the lower surface of the block member 27. The width of the passage groove 28 is the same as the interval width of the pressing plates 18 arranged in parallel.

  A first restraining member 29 is provided so that the foremost nut 8 of the nuts 8 arranged side by side does not slide down. The first restraining member 29 is a columnar member and enters the transport groove 17 from above. A through hole 30 penetrating in the vertical direction is formed in the block member 27, and the first restraining member 29 is inserted therein in a state in which it can advance and retract. Various means such as an air cylinder, an electromagnetic solenoid, etc. can be used as the advance / retreat means of the first stop member 29. In this case, the air cylinder 31 is used. The air cylinder 31 is fixed to the upper surface of the block member 27, and the piston rod 32 is coupled to the first restraining member 29. Since the first stop member 29 has advanced to the position shown by the two-dot chain line in FIG. 4, the first nut 8 is prevented from sliding.

  A second restraining member 33 is provided to restrain the second nut 8 from sliding when the first restraining member 29 is retracted and the first nut 1 is allowed to slide. The second restraining member 33 is advanced and retracted by an air cylinder 34 fixed to the upper surface of the block member 27, and here is constituted by its piston rod. In order to make the second restraining member 33 advance and retreat, the block member 27 has a through hole 35 penetrating in the vertical direction, and the second restraining member 33 is inserted therein.

  As shown in FIG. 5, the first restraining member 29 moves forward and backward to a position for receiving the outer peripheral portion on the front side of the flange portion 11. On the other hand, the second restraining member 33 advances and retreats to a position for receiving the main body portion 9. Here, it is shifted to one side of the conveying groove 17. When the first stop member 29 is advanced, the second stop member 33 is retracted, and when the first stop member 29 is retracted, the second stop member 33 is advanced. Therefore, the first stop member 29 and the second stop member 33 advance and retreat relative to the passage member 16 alternately.

  As described above, the first restraining member 29 and the second restraining member 33 advance and retreat in a direction parallel to the axis of the screw hole 13, but are inclined by 90 degrees from the width direction of the conveying groove 17. You may make it advance and retreat.

  Air for initiating initial movement of the earliest nut 8 is injected almost simultaneously with or immediately after the first restraining member 29 releases the restraint of the earliest nut 8. This injection is performed from an initial air injection port 37 provided in the passage member 16. The initial air injection port 37 opens to the bottom surface 36 of the conveying groove 17, and the opening portion of the air passage 38 that penetrates the passage member 16 in an inclined state is the initial air injection port 37. As shown in FIG. 4B, since the air passage 38 is inclined, the air jetted from the air passage 38 is obliquely forward and strikes the inner surface of the screw-side 13 of the first nut 8 on the conveyance side. Therefore, the opening position of the initial air injection port 37 is selected so as to make contact with the air as described above. Note that this air injection may be sprayed not to the inside of the screw hole 13 but to the rear of the outside of the nut 8. The initial air injection port 37 may be opened not on the bottom surface 36 of the conveyance groove 17 but on the inner surface on the lateral side of the conveyance groove 17.

  Carrying air injection is performed on the earliest nut 8 that has initially moved by air injection from the initial air injection port 37, and the nut 8 is delivered to the target location through the supply hose 23 by pneumatic feeding. In order to perform the transport air injection, a transport air injection port 39 is opened at the bottom surface 36 of the transport groove 17. In the carrier air injection port 39, an opening portion of the air passage 40 that penetrates the passage member 16 in an inclined state is a carrier air injection port 39. As shown in FIG. 4 (A), since the air passage 40 is inclined, the air jetted from the air passage 40 heads obliquely forward and strikes the rear side of the earliest nut 8. Therefore, the opening position of the carrier air injection port 39 is selected so as to make contact with the air as described above. Reference numerals 48 and 49 denote air hoses connected to the air passages 38 and 40.

  The transport air injection port 39 is provided at a position shifted from the first restraining member 29 toward the transport direction, and is preferably disposed immediately after the first restraining member 29. By carrying out like this, conveyance air injection can be performed immediately after passing the conveyance air injection port 39 with respect to the first nut 8 which started the initial movement by retreating of the 1st stop member 29 and initial air injection, and is reliable. Parts can be transported smoothly. By providing the carrier air injection port 39 immediately after the first stop member 29, the carrier air injection port 39 is provided to the earliest nut 8 that has started the initial movement by the backward movement of the first stop member 39 and the initial air injection. The carrier air can be injected within a very short time after passing.

  At the time when the carrier air injection is performed, the first stop member 29 is already advanced and the next nut 8 is provided as the earliest nut 8. Thus, when the 1st control member 29 approachs in the channel | path member 16, the air inject | poured from the conveyance air injection port 39 hardly comes to flow in the reverse direction of a conveyance direction. As a result of the significant reduction of the backflow in this way, the air pressure on the conveyance direction side of the first stop member 29 can be maintained high, the effect of pumping the nut 8 is improved, and the conveyance thrust is improved.

  In order to obtain the initial movement as described above, the injection start timing from the initial air injection port 37 is set substantially at the same time or immediately after the first stop member 29 releases the stop of the first nut 8. .

  As described above, the carrier air is jetted from the carrier air jet port 39 after the injection from the initial air jet port 37 is started. In order to appropriately obtain such an injection order, the time from the start of initial air injection to the start of carrier air injection is set to a predetermined time. This predetermined time is set by timer means (described later) that starts a time measuring operation simultaneously with the start of air injection from the initial air injection port 37.

  After the elapse of the predetermined time, the carrier air is ejected from the carrier air ejection port 39. Thus, after the air injection from the initial air injection port 37 is completed, the transfer air is injected from the transfer air injection port 39. Accordingly, by appropriately setting the predetermined time, it is possible to reliably carry out the carrier air injection after the nut 8 has passed through the carrier air injection port 39, and smooth component conveyance becomes possible.

  Alternatively, the carrier air is ejected from the carrier air ejection port 39 before the predetermined time elapses. By doing so, the carrier air is jetted from the carrier air jet port 39 before the air jet from the initial air jet port 37 is completed. Therefore, by appropriately setting the predetermined time, it is possible to reliably carry out the carrier air injection when the nut 8 does not stop after the initial movement, and the carrier air is jetted smoothly without stopping the parts. Transport and shorten the transport time.

  Next, an operation control system of this apparatus will be described.

  FIG. 7 is a control system diagram, in which a solid line indicates an air hose for supplying and discharging air, and a chain line indicates a transmission line for a control signal. In the state shown in the figure, the second stop member 33 is retracted by the retreat of the piston of the air cylinder 34, and the first stop member 29 is advanced by the advance of the piston of the air cylinder 31.

  Working air from an air pump or an air supply source 42 which is an air supply facility of a factory is supplied from the advance / retreat control valve 43 to both the air cylinders 31 and 34 and from the transfer control valve 44 to the transfer air injection port 39. The The illustrated transmission line transmits a control signal from the control device 41 to the advance / retreat control valve 43 and the transport control valve 44. The control device 41 can be easily implemented by a general sequence circuit or a simple computer device. The advance / retreat control valve 43 includes a first control valve 45 and a second control valve 46. The piping is connected so that the working air sent from the second control valve 46 is supplied to the initial air injection port 37. That is, the working air that is supplied to the air cylinder 34 and advances the second restraining member 33 is shared by the jet air from the initial air jet port 37.

  Due to the control signal from the control device 41, the first control valve 45 is opened, and the exhaust port (not shown) of the second control valve 46 is open to the atmosphere, so that the state shown in the figure is maintained. . That is, the escape unit 20 is not operating.

  Here, when the second control valve 46 is opened by the control signal from the control device 41 and the exhaust port (not shown) of the first control valve 45 is opened to the atmosphere, the first stop member 29 moves backward. The restraint of the first nut 8 is released, and at the same time, the second restraining member 33 advances to restrain the forward movement of the second nut 8. Simultaneously with this restraining operation, the working air is sent to the initial air injection port 37 and is injected to the earliest nut 8 to start the initial movement. The start timing of the initial air injection is performed almost simultaneously with the first stop member 29 releasing the stop of the first nut 8 as described above, but may be performed immediately thereafter. The air injection time from the initial air injection port 37 is substantially the same as the operation stroke time of the air cylinder 34, and this operation stroke time is less than 0.4 seconds, and here is 0.3 seconds.

  A timer means 47 that starts timing simultaneously with the start of air injection from the initial air injection port 37 is incorporated in the control device 41, and signal lines from the timer means 47 are connected to the first control valve 45, the second control valve 46, and A transfer control valve 44 is connected. The timer means 47 is generally employed, and transmits a signal when the stored predetermined time elapses. For example, the timer means 47 transmits a first signal after elapse of 0.4 seconds, and then further The second signal is transmitted in 0.1 seconds.

  When 0.4 seconds elapse after the timer unit 47 starts timing, the second control valve 46 is closed by a signal from the timer unit 47, and at this point, the advancement of the second stop member 33 is completed, and at the same time, the first stop member 29 completes the reverse, and the air injection from the initial air injection port 37 is also stopped. Thereafter, when 0.1 second elapses, a signal from the timer means 47 is transmitted to the transport control valve 44 and the transport air is ejected from the transport air injection port 39. This injection is performed by transmitting a control signal from the timer means 47 to the transport control valve 44. That is, this 0.4 second is the predetermined time, which is set by the timer means 47 that starts the time counting operation at the same time as the start of air injection from the initial air injection port 37. After 1 second has passed, the carrier air is ejected from the carrier air injection port 39.

  When the above-mentioned 0.4 seconds have elapsed, that is, when the nut 8 has passed through the carrier air injection port 39, an operation signal is transmitted from the control device 41, so that the advancement of the first stop member 29 and the second stop member 33 again. Do the retreat. By doing so, as described above, the air injected from the transfer air injection port 39 hardly flows in the reverse direction of the transfer direction.

  Thus, at the time when 0.4 seconds have elapsed after the start of air injection from the initial air injection port 37, the earliest nut 8 is the conveyance air injection port as shown by a two-dot chain line in FIG. In this state, the carrier air is jetted and the nut 8 is delivered to the target location. The injection time from the carrier air injection port 39 is set by the length of the supply hose 23, the air pressure, the mass of the nut 8, and the like, and this set time is stored in the timer means 47 in advance.

  In the above-described operation, after the air injection from the initial air injection port 37 is completed, the carrier air is injected from the carrier air injection port 39. Therefore, the nut 8 is temporarily moved by the initial air injection and then temporarily stopped, and then conveyed again by the conveying air injection. Instead of such an operation, the carrier air can be ejected from the carrier air jet port 39 while the air jet from the initial air jet port 37 is continued. If it does in this way, nut 8 will be conveyed by conveyance air injection at the time which does not stop after initial movement by initial air injection. Therefore, there is no component stop and it is effective for shortening the conveyance time. Even if the nut 8 is likely to get caught on the inner surface of the passage member 16, there is no stop of the parts, so that the nut 8 continues to float by the air layer, and smooth parts can be conveyed.

  As described above, in order to inject the carrier air from the carrier air injection port 39 while the air injection from the initial air injection port 37 continues, for example, 0 seconds before the predetermined time 0.4 seconds elapses. When 3 seconds have elapsed, air is injected from the carrier air injection port 39. Thereby, while the initial air injection is continued, the carrier air injection is repeated, and the nut 8 is conveyed to the target location without stopping. As described above, the timer operation is stored so that the control signal directed to the transport control valve 44 is transmitted from the timer means 47 when 0.3 second has elapsed.

  Time counts such as 0.4 seconds, 0.3 seconds, or 0.1 seconds as described above are inherent in the present embodiment, and actually depend on factors such as air pressure and the mass of the nut 8. Various times are set.

  The operational effects of the first embodiment described above are as follows.

  Air injection is performed from the initial air injection port 37 to the earliest nut 8 almost simultaneously with or immediately after the first restraining member 29 releases the restraint of the earliest nut 8. The nut 8 is surely initially moved. Therefore, even if the earliest nut 8 and the second nut 8 are not easily separated due to adhesion of oils such as rust preventive oil or overlapping of parts, the foremost nut 8 is almost forcibly forced. Initial movement is granted. In addition, the second nut 8 is prevented from moving by the second restraining member 33 by the alternate operation of the first restraining member 29 and the second restraining member 33. Therefore, there is no hindrance to the prior movement of the first nut 8.

  Then, since the transfer air is blown from the transfer air injection port 39 to the earliest nut 8 after the start of the initial movement, the earliest nut 8 is reliably transferred to the target location. Thus, air injection from the initial air injection port 37 and air injection from the transfer air injection port 39 are performed on the earliest nut 8, and reliable initial movement and transfer to the target location are performed. In other words, since the first nut 8 is separated from the second nut 8 by the initial air injection and becomes isolated, the carrier air injection is performed, so the first nut 8 is different from the second nut 8. It is transported reliably without regard.

  Furthermore, after the start of air injection from the initial air injection port 37, a predetermined time of 0.4 seconds has passed, and then the transfer air is injected from the transfer air injection port 39. The timing of air injection is reliably set so that the carrier air is injected after passing through the air injection port 39.

  The predetermined time of 0.4 seconds is set by the timer means 47 that starts the time measuring operation simultaneously with the start of air injection from the initial air injection port 37, and after the predetermined time of 0.4 seconds has passed, the carrier air injection The carrier air is configured to be ejected from the port 39.

  With the above configuration, after the air injection from the initial air injection port 37 is completed, the transfer air is injected from the transfer air injection port 39. Accordingly, by appropriately setting the predetermined time of 0.4 seconds, it is possible to reliably carry out the carrier air injection after the nut 8 has passed through the carrier air injection port 39, thereby enabling smooth component conveyance.

  The predetermined time 0.4 seconds is set by the timer means 47 that starts the time counting operation simultaneously with the start of the air injection from the initial air injection port 37, and the carrier air injection is performed before the elapse of the predetermined time 0.4 seconds. The carrier air is configured to be ejected from the port 39.

  With the above configuration, the carrier air is jetted from the carrier air jet port 39 before the air jet from the initial air jet port 37 is completed. Therefore, by appropriately setting the predetermined time of 0.4 seconds, it is possible to reliably execute the carrier air injection when the nut 8 does not stop after the initial movement, and the carrier air is injected without stopping the parts. it can. Therefore, there is no component stop and it is effective for shortening the conveyance time. Even if the nut 8 is likely to get caught on the inner surface of the passage member 16, there is no stop of the parts, so that the nut 8 continues to float by the air layer, and smooth parts can be conveyed.

  The transport air injection port 39 is provided at a position shifted from the first restraining member 29 toward the transport direction.

  Since the carrier air injection port 39 is provided at the above position, the first nut 8 that has started the initial movement by the backward movement of the first restraining member 29 and the initial air injection is conveyed immediately after passing through the carrier air injection port 39. Air injection can be performed, and reliable parts conveyance is possible.

  The carrier air injection port 39 is disposed immediately after the first restraining member 29.

  Since the carrier air injection port 39 is provided at the above position, the first nut 8 that has started initial movement by the backward movement of the first restraining member 29 and the initial air injection is extremely short after passing through the carrier air injection port 39. The carrier air injection can be performed in time, which shortens the operation cycle time and is effective for improving the carrier efficiency.

  An air cylinder 34 for advancing and retracting the second restraining member 33 is provided, and working air for causing the air cylinder 34 to perform an advance operation is commonly used as ejected air from the initial air ejection port 37.

  The initial air injection can be performed almost in synchronism with the advancement of the second stop member 33 in a state where the movement of the second nut 8 is blocked by the advancement operation of the second stop member 33. Therefore, only the first nut 8 is reliably conveyed without being affected by the second nut 8. Since the working air obtained from the single air supply source 42 is used in common for the advancement of the second restraining member 33 and the initial air injection, the supply and discharge of the working air and the structure of the air supply passage are used. Is simplified. Furthermore, since the initial air injection is used for the initial movement of the earliest nut 8, the injection time may be short. At the same time, since the air cylinder 34 for driving the second restraining member is also used to advance and retract the second restraining member, the cylinder capacity is small and the supply time of the working air to the cylinder 34 may be short. The initial air injection and the air cylinder operation can be performed at approximately the same time because of their functions. Therefore, since both can be set to approximately the same time in a short time in this way, it is not necessary to set the air supply time to both separately, which is effective for simplification of the control circuit and the control structure.

  An air cylinder 31 is provided as advance / retreat means for advancing / retreating the first stop member 29.

  Since the advance and retreat of the second restraining member 33 is linked with the initial air injection, the air cylinder 34 is employed, but various driving means for the first restraining member 29 can be employed. It is possible to appropriately select the advance / retreat means on the premise of this.

  The advancing / retreating means can obtain advancing / retreating output from an air cylinder, an electromagnetic solenoid or the like.

  An optimum one can be selected from various advance / retreat means such as an air cylinder and an electromagnetic solenoid. In the case of an air cylinder, since the second stop member 33 is driven by the air cylinder 34, the whole can be operated by air. In the case of an electromagnetic solenoid, the electrical wiring can be simplified as compared with the air piping. Since various advance / retreat means such as air cylinders and electromagnetic solenoids can easily set their operation timing by air supply control, energization control, etc., the operation start timing of the second stop member 33 and the initial air injection start timing It is possible to easily set the operation timing related to the above.

  As described above, according to the present invention, the initial movement of the earliest part can be surely performed, and subsequently the conveyance to the target location can be surely performed. It can be used in a wide range of industrial fields such as sheet metal welding processes for home appliances.

It is a side view which shows the whole apparatus. It is the top view which looked at FIG. 1 from right above. It is (3)-(3) sectional drawing of FIG. It is sectional drawing which shows the principal part of this apparatus. It is a top view which shows the positional relationship of a nut and each control member. It is (6)-(6) sectional drawing of FIG. It is a control system figure of this apparatus. It is sectional drawing of a prior art example.

Explanation of symbols

8 Projection nut 16 Passage member 17 Conveying groove 20 Escape unit 27 Block member 28 Passing groove 29 First restraining member 31 Air cylinder 33 Second restraining member 34 Air cylinder 37 Initial air injection port 39 Conveying air injection port 41 Control device 42 Air supply Source 43 Advance / Retreat Control Valve 44 Transport Control Valve 45 First Control Valve 46 Second Control Valve 47 Timer Means

Claims (8)

  A first stop member for stopping the first part of the parts lined up in the conveying direction in the passage member and a second stop member for stopping the second part of the lined parts alternately with respect to the path member In the type of advance and retreat, initial air that injects air for causing the first part to perform initial movement almost simultaneously with or immediately after the first stop member releases the stop of the first part. An injection port is provided in the passage member, and a transfer air injection port for injecting air for conveying the first part to the target location after the start of the initial movement is provided in the passage member, and from the initial air injection port A component conveyance control device configured to eject conveyance air from a conveyance air injection port after a predetermined time has elapsed after the start of air injection.   The predetermined time is set by a timer unit that starts a time counting operation simultaneously with the start of air injection from the initial air injection port, and the carrier air is injected from the carrier air injection port after the predetermined time has elapsed. Item 1. A parts conveyance control device according to Item 1.   The predetermined time is set by a timer means that starts a timing operation simultaneously with the start of air injection from the initial air injection port, and is configured such that the carrier air is injected from the carrier air injection port before the lapse of the predetermined time. The component conveyance control apparatus according to claim 1.   The component conveyance control device according to any one of claims 1 to 3, wherein the conveyance air injection port is provided at a position shifted to a conveyance direction side with respect to the first restraining member.   The component conveyance control device according to claim 1, wherein the conveyance air injection port is disposed immediately after the first restraining member.   6. An air cylinder for advancing and retreating the second restraining member is provided, and working air for causing the air cylinder to advance is shared as blast air from the initial air blast port. The part conveyance control apparatus of description.   The parts conveyance control device according to any one of claims 1 to 6, wherein an advance / retreat means for advancing / retreating the first stop member is provided.   8. The component conveyance control device according to claim 7, wherein the advance / retreat means is capable of obtaining an advance / retreat output from an air cylinder, an electromagnetic solenoid or the like.

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